Vaccination and Henoch-Schoenlein purpura.
D002648:Child; D006801:Humans; D006967:Hypersensitivity; D008297:Male; D011241:Prednisone / Q000627:therapeutic use; D011693:Purpura / Q000188:drug therapy / Q000209:etiology*; D012900:Smallpox Vaccine / Q000009:adverse effects*
D012900:Smallpox Vaccine; D011241:Prednisone